@echo off
setlocal enabledelayedexpansion
cd /d "%~dp0"
for /f "delims=" %%i in ('dir /b /a-d *.mp4') do (
    set "OldName=%%~ni"
    REM 假设文件名格式是 real1662447316.mp4
    set "TimeSecs=!OldName:~4!"
    call :SecsToDate !TimeSecs! TimeYear TimeMonth TimeDay TimeHour TimeMinute TimeSecond
    set "NewName=!OldName:~0,4!!TimeYear!-!TimeMonth!-!TimeDay!-!TimeHour!-!TimeMinute!-!TimeSecond!%%~xi"
    echo From [%%i] To [!NewName!]
    ren "%%i" "!NewName!"
)
goto :eof

:SecsToDate %secs% yy mm dd hh nn ss
setlocal ENABLEEXTENSIONS
set /a i=%1,ss=i%%60,i/=60,nn=i%%60,i/=60,hh=i%%24,dd=i/24,i/=24
set /a a=i+2472632,b=4*a+3,b/=146097,c=-b*146097,c/=4,c+=a
set /a d=4*c+3,d/=1461,e=-1461*d,e/=4,e+=c,m=5*e+2,m/=153,dd=153*m+2,dd/=5
set /a dd=-dd+e+1,mm=-m/10,mm*=12,mm+=m+3,yy=b*100+d-4800+m/10
(if %mm% LSS 10 set mm=0%mm%)&(if %dd% LSS 10 set dd=0%dd%)
(if %hh% LSS 10 set hh=0%hh%)&(if %nn% LSS 10 set nn=0%nn%)
if %ss% LSS 10 set ss=0%ss% 
endlocal&set %7=%ss%&set %6=%nn%&set %5=%hh%&^
set %4=%dd%&set %3=%mm%&set %2=%yy%&goto :EOF
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